Clamp lever for buckles



Dec. 2, 1930. w, J MOR E 1,783,854

CLAMP LEVER FOR BUCKLES Filed Dec. 28, 1929 IN V EN TOR.

A TTORNEYS.

v One stock.

Patented Dec. 2,

L MBL V F03 BUCKLE i i ltiypijesent invention relates to ornamental buckles and the like5 and hasparticular refer ence to the formation of clamp levers thereobject of the *invention is to form a rigid, sturdy clamp lever from extruded 'metal. l

Another object of the inventionis to simplify the formation of clamp levers from bar A further object is to reduce the number of and to simplifyjthe type of operations required for forming a clamp lever.

An additional object is to form clamp levers ,with a minimum of resulting waste material.

With theseandother objects and advantageous features in view, the invention consists in the novel method and the novel'construction more fully disclosed in the detailed i description following and more particularly set forth in the appended claims. I

Referring to the drawings: v Fig. lisa perspective view of an extruded barxstock suitable for forming clamp levers;

2 Fig.2 is a cross section thereof:

Fig. 3 is a plan view of a clamp lever blank cut from the length of bar stock; v V

Fig. 4 is a view similar to Figure 3, showi ing the ends of the flange portion after shear- Fig. 5 is an end view of Figure 4;

Fig; 6 is a view similar to Figure l,-but

showing the appearance of the blank after stamping;

punching;

Fig. 8 is a cross section of Figure 7; and Fig.9 is a perspectiveview of the completed clamp lever. r I i It has been found desirable in the manufacture of clamp levers for belt buckles to utilize bar stock, thus providing a rigid, sturdy buckle, and eliminating the necessity of fold- 15 ing sheet stock, thus materially reducingman v '50 metal blank extruded in the form of an L,

in'Figure 21'. p Y "The extruded'blank 1O is'cutinto suitable "a base portion l la aii upstanding 'fian'ge portio1i 12a, and gripping-teeth 1301. 15 The lever blanks "are then sheared orburred; as indi; 'c'ated in Figurefh'to remove the end portions extend below the surface of the base-portion Fig. '7 is a view similartoFigure 6; but

edges of theloopcand the trunnions, a's'indishowing the appearance of the blank after the necessary operations" to produce tlie finished-J l article comprising c tting, shearing,

' punchin'g', end'finishing; and the following is a detaileddescriptionof a preferred form of clamp lever and of the novel methodof producing the same. 7 7

Referring to the drawings, the' novel'blank '10 of hard material such as'brass-or the like is extruded in the form of an L, witha base section 11 andan upstanding flange section 12 substantially perpendicular to the' basesection; the flange section being formed withribs functioning as grippingteetli l3 longi tudinallypositioned at theupperend thereof; 7

and 'having'sloping sidesle and 15,' as shown 305 lengths, as shown in Figure 3," each having:

of the flange-12a, leavinga central gripping portion 16 and twoareas 17 which-preferably ateach'end thereofl as indicated in Figures t andfij 'Theblank is then trimmed, preferably by a'shearing or stamping operatiorn as shown in v Figure 6, to provide a loop section'18 and 8.0'

trunnions 19 a punching operation now re moves-the center portionofthe loop section 18 to form the loop 20,'-the"final finishing operationfpreferably by swaging, rounding the cated at 21 and 225m Figure 9. My improved construction and method of producing the clamp lever therefore 'simpli 'fies theff ormation of the, completed lever, uti llzes' inexpens ve cuttlng shearing, and punchlng operat1ons, and minimizes scrap.

While I havedescrib'ed a specific method of operation was specific construction of a clamp" lever, .it isi'fobviousgthat desired changes in procedure; in arrangement, or in l, The method of forming: clamp levers 10$ from L-shaped bar stock having a base and a flange substantially perpendicular thereto, comprising the steps of cutting the bar stock in suitable lengths each having a base portion and a flange portion, shearing the ends of the flange portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loop section and end trunnions, and punching the loop section to form a loop.

2. The method of forming clamp levers from L-shaped bar stock having a base and a flange substantially perpendicular thereto, comprising the steps of cutting the bar stock in suitable lengths, each having a base portion and a flange portion, shearing the ends of the flange portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loop section and end trunnions, punching the loop section to form a loop, and rounding the edges of the loop and the end trunnions.

3. The method of forming clamp levers from bar stock having a base and a flange substantially perpendicular thereto, comprisin the steps of cutting the bar stock in suitab e lengths, each having a base portion and a flange portion shearing the ends of the flange portion below the surface of the base portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loop section and end trunnions, and punching the loop section to form a loop.

4. The method of forming clamp levers from bar stock having-a base and a flange substantially perpendicular thereto, compris ing the steps of cutting the bar stock in suitable lengths, each having a base portion and aflange portion, shearing the ends of the flange portion belon the surface of the base portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loop section and end trunnions, punching the loop section to form a loop, and rounding the edges of the loop and the end trunnions.

5. The method of forming clamp levers from bar stock comprising the steps of extruding metal bar stock in L shape with a base and a flange substantially perpendicular thereto, and ribs on the edge ofsaid flange, cutting the bar stock in suitable lengths, each having a base portion and a flange portion, shearingthe ends of the flange portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loopsection and end trunnions, punching the loop section to form a loop, and rounding the edges of the loop'and' the end trunnions.

6. The method of forming clamp levers from bar stock having a base and a flange substantially perpendicular thereto, and ribs on the edge of said flange comprising the steps of cutting the bar stock in suitable lengths, each having a baseportion and a flange portion, shearing the ends of the flange portion to form trunnion sections, shearing the base portion and the trunnion sections to provide a loop section and end trunnions, and punching the loop section to form a loop.

7. The method of forming clamp levers WILLIAM J. MORSE. 

